What is the weather forecast like for the Milky Way's most common planets? Cloudy or clear? New research aims to discover if so-called "mini-Neptunes" — which are smaller than the solar system ice ...

Astronomers have spotted two mini-Neptune exoplanets that are losing their puffy atmospheres, in the process possibly transforming into super-Earths. Radiation from the planets' parent stars is ...

Artist depiction of the mini-Neptune K2-18 b. Credit: NASA, CSA, ESA, J. Olmstead (STScI), N. Madhusudhan. Credit: Cambridge University Exoplanet K2-18b is garnering a lot of attention. James Webb ...

Imagine a planet about 2.5 times the radius of Earth orbiting a distant star. Do you picture something like our own rocky, ocean-strewn world? Or is it something more akin to a small version of a ...

Astronomers have discovered four worlds unlike anything in our own solar system that provide a "missing link" between Earth twins and Neptune-like planets, they say. Scientists are interested in mini ...

Mini-Neptunes and super-Earths may have a lot more in common than just being superlatives. Four gaseous exoplanets, each a bit smaller than Neptune, seem to be evolving into super-Earths, rocky worlds ...

New research suggests that astronomers may have been entirely wrong about a class of exoplanets that they call “mini-Neptunes.” Studying exoplanets tends to involve a little bit of trickery.

A strange planet that's stymied astronomers for years has an "unusually shiny atmosphere" and could be home to large amounts of water vapor, scientists said in a study published Wednesday in the ...

A newly discovered distant mini-Neptune planet may possess its own atmosphere, ocean, or a combination of the two, even if they don't last for long. The extrasolar planet, or exoplanet, designated ...

When astronomers look at planets outside our solar system, called exoplanets, often they have only minimal information they can use to classify them. Two key factors they often do know are the planets ...

The European Space Agency (ESA)’s CHEOPS satellite has discovered four new exoplanets — and they are a hard-to-detect type called a mini-Neptune. These planets are notable because they are the ...

"We want to comprehend the behaviors of these planets, given that those slightly larger than Earth and smaller than Neptune are the most common in the galaxy." When you purchase through links on our ...